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Review / Afina

Afina Filtered Shower Head review

The strongest chlorine result anyone has independently recorded for a filtered shower head, and two findings from the same test that the marketing does not mention.

By Scooter M.Published
A chrome shower head photographed straight on against a plain wall

Disclosure — some links on this page go to Amazon, and we earn a commission if you buy through them. It costs you nothing extra and it does not change what we recommend or in what order. The full disclosure.

The short answer

WaterFilterGuru measured the Afina at 1.68 PPM chlorine down to 0.02 PPM — just under 99 percent, the best figure recorded for any filtered shower head. In the same test hardness went in at roughly 250 PPM and came out at 251, and all three disinfection byproducts increased. It holds no certification.

Afina Filtered Shower Head

The highest measured chlorine reduction

The best chlorine number independently recorded for any filtered shower head — just under 99 percent. The same test found it reduced no hardness at all and that disinfection byproducts rose rather than fell, which is why it does not top our ranking.

Published specifications

Filter media
KDF-55 with calcium sulfite and activated carbonSource: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)
Stated flow rate
2.5 GPM with a 1.8 GPM restrictor supplied; 1.85 GPM measured independentlyThe measured figure is WaterFilterGuru's, not ours. A separate 1.8 GPM variant is sold for California and New York.Source: WaterFilterGuru, "Afina Shower Head Review" — independent lab testing, credited to them (retrieved 2026-09-06)
Rated cartridge life
90 days on the shower head listing; the replacement-filter listing says every 2 monthsAfina's own two listings disagree. We report both rather than picking the flattering one; the independent reviewer recorded 2 months.Source: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)
Chloramine
Not publishedAfina publishes no chloramine performance figure.
Format
Replacement shower head with integrated filterSource: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)
Housing
Not publishedFinishes are listed — chrome, brushed nickel, matte black — but no housing material is stated.

What it does well

  • Independently measured at just under 99% chlorine reduction, 1.68 PPM down to 0.02 PPM
  • Media named outright: KDF-55 with calcium sulfite and activated carbon
  • Measured flow of 1.85 GPM, which the reviewer recorded as retaining 100% of baseline
  • Sold in several finishes, and in a 1.8 GPM variant for California and New York

Where it falls short

  • No certification of any kind
  • Disinfection byproducts rose in independent testing
  • Marketed for hard water while reducing no hardness
  • Short cartridge interval, and the maker's own figures disagree on what it is

What it does not do

  • It does not soften water. An independent lab measured hardness going in at roughly 250 PPM and coming out at 251 — despite the hard-water marketing.
  • It did not reduce disinfection byproducts in that test. All three measured DBPs increased after filtration rather than falling.
  • It holds no certification. The independent reviewer recorded it as neither performance certified nor design certified.

Who it is for

Someone on chlorinated municipal water who wants the strongest measured chlorine result in a replacement head and is buying for that specifically.

Skip it if

Your report shows disinfection byproducts near their limits, or you want a certification. Neither is this product's strength — the DBP discussion.

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Certifications and claims

Two tables, deliberately. A certification names a standard and the body that issued it, and you can look it up. A claim is the maker describing itself. Both belong here; conflating them does not.

Certifications (0)

No third-party certification is published for this product. That is not evidence of poor performance and it is not evidence of good performance — it means there is nothing independent to check.

The maker’s own claims (2)

Sources for this product

The number it is bought for

Take the good result seriously first, because it is real. Of every filtered shower head with an independent measurement behind it, the Afina posted the highest chlorine reduction — 1.68 PPM going in, 0.02 PPM coming out. That is a stronger figure than Canopy's 97 percent and far stronger than the 42 percent an independent tester recorded from a genuinely certified inline unit.

The measured flow rate is also unusually good. The same reviewer recorded 1.85 GPM and noted it retained 100 percent of the baseline flow — meaning the filter itself was costing effectively nothing in pressure at the point of testing. For a replacement head, where you inherit the fixture's flow permanently, that matters.

We measured none of this. WaterFilterGuru did, we are crediting them by name, and their review is linked in the sources at the foot of this page. We own no Afina, operate no lab and have tested nothing.

And the two findings alongside it

The first is the one this whole site exists to correct. Afina markets the unit for hard water — it is in the product title on several of its listings. In that same test, hardness went in at roughly 250 PPM and came out at 251. No reduction. That is not a surprise and it is not specific to Afina: independent testing found no shower filter that reduces hardness, because the contact time inside a shower head is about a tenth of a second and ion exchange needs seconds.

The second finding is more unusual and more interesting. All three disinfection byproducts the reviewer measured increased after filtration rather than falling. DBPs — trihalomethanes and haloacetic acids — are the compounds the EPA actually regulates, they are more stable than free chlorine, and they are the health-relevant product of chlorination. A unit that strips almost all the free chlorine while leaving the byproducts higher than it found them is doing something worth knowing about before you buy.

The certification, and the wording

Afina's listings say the filter is "tested to meet NSF-177 standards". That is a testing claim: it says a lab ran a protocol, and it names no certifying body and produces no listing you can search. The independent reviewer who examined it recorded the unit as neither performance certified nor design certified.

This is the same construction used across the premium end of this category, and it is worth reading precisely every time. "Tested and certified by IAPMO R&T" — which is what the Culligan says — names a body and produces a public listing. "Tested to meet" does neither. How to check a certification yourself.

The cartridge, and a disagreement in Afina's own listings

The shower head listing states a 90-day filter life. Afina's own replacement-filter listing says to replace every 2 months. The independent reviewer recorded 2 months. Those are not the same number, and we are reporting all of them rather than quoting the most flattering one.

Either way it is a short interval by the standards of this category, where 10,000 gallons or six months is the convention for KDF and carbon units. Six cartridges a year against two is a materially different running cost, and it is the kind of figure worth putting through the twelve-month arithmetic before subscribing to anything.

Who it is for

  • You are on chlorinated municipal water and want the strongest measured chlorine result available in a replacement head.
  • You want a head rather than an inline unit, and you want one whose flow rate was independently checked rather than merely claimed.
  • You want the media named — KDF-55 with calcium sulfite and activated carbon is stated outright.

Who should skip it

  • Your water report shows disinfection byproducts near their limits. This is the one result that should stop you.
  • You want a certification you can look up. There is none, and the independent reviewer confirmed as much.
  • You bought it for hard water. It reduces none — the correction.
  • You are on chloraminated supply. No chloramine figure is published, and KDF alone does not address it — the options that do.

Questions people actually ask

+ Is the Afina shower head worth it?

For chlorine on municipal water, it posted the best independently measured figure of any filtered shower head. Against that, it holds no certification, reduces no hardness, and disinfection byproducts rose in the same test.

+ Is Afina NSF certified?

No. Its listings say "tested to meet NSF-177 standards", which names no certifying body, and the independent reviewer recorded it as neither performance nor design certified.

+ Does the Afina shower head soften hard water?

No. Independent measurement found hardness at roughly 250 PPM going in and 251 PPM coming out, despite the hard-water marketing.

+ How often do you change the Afina filter?

Afina's shower head listing says 90 days; its own replacement-filter listing says every 2 months. The independent reviewer recorded 2 months.

+ Does Afina remove chloramine?

Afina publishes no chloramine figure, and KDF-55 does not break the chlorine-ammonia bond on its own.

Sources

Everything on this page traces to one of these. Where a source is brand-owned we say so, because a filter maker explaining filter chemistry has an interest and you are entitled to weigh it.